stabilization of centrifuges with instabilities due to fluid-structure interactions: various control approaches
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ID: 249275
2001
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Abstract
Partially filled centrifuges exhibit unstable behavior over particular rotational speed
ranges. To remove this unstable behavior, three different control approaches are
presented which are experimentally implemented using a magnetic bearing. First, by
means of a PD-controller the system stiffness is changed leading to a shift of the instability
region. Second, the instability region is removed by a cross coupled feed back
of the rotor vibration velocities. This cross coupling directly counteracts the fluid excitation
mechanism. Third, a disturbance observer is presented which allows to estimate
and compensate the not exactly known fluid force.
| Reference Key |
ulbrich2001internationalstabilization
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| Authors | ;Heinz Ulbrich;Adrian Cyllik;Guido Ahaus |
| Journal | ACS omega |
| Year | 2001 |
| DOI |
10.1155/S1023621X01000276
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| URL | |
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